CAJ | 학술논문

2011年8月29日—9月1日采样分析了浙江省诸暨市枫桥镇10口三角帆蚌( Hyriopsis cumingii)养殖池塘中的浮游植物种类组成、生物量和理化环境因子。结果显示,三角帆蚌养殖池塘内共观察到浮游植物51属(种),优势种为平裂藻、微囊藻、腔球藻和栅藻；浮游植物生物量为0.71~8.01×108 cell/L,71%~97%为蓝藻。池塘内的透明度(SD)平均值为33 cm、溶氧(DO)为4~12 mg/L、总氮(TN)为1.933~4.062 mg/L、总磷(TP)为0.154~1.010 mg/L、高锰酸钾指数(CODMn)为6.49~10.06 mg/L,说明三角帆蚌养殖池塘具有DO较高,SD、TN、TP、CODMn和TN/TP 较低的特点。 RDA分析显示水温是影响池塘中浮游植物常见种类生物量的主要环境因子,说明相近池塘的浮游植物群落接近。鉴于所调查的池塘内TN、TP、CODMn和TN/TP较低,建议适当增加杂食性鱼类放养密度和配合饲料投喂量并降低鸭粪施肥量。
2011년8월29일—9월1일채양분석료절강성제기시풍교진10구삼각범방( Hyriopsis cumingii)양식지당중적부유식물충류조성、생물량화이화배경인자。결과현시,삼각범방양식지당내공관찰도부유식물51속(충),우세충위평렬조、미낭조、강구조화책조；부유식물생물량위0.71~8.01×108 cell/L,71%~97%위람조。지당내적투명도(SD)평균치위33 cm、용양(DO)위4~12 mg/L、총담(TN)위1.933~4.062 mg/L、총린(TP)위0.154~1.010 mg/L、고맹산갑지수(CODMn)위6.49~10.06 mg/L,설명삼각범방양식지당구유DO교고,SD、TN、TP、CODMn화TN/TP 교저적특점。 RDA분석현시수온시영향지당중부유식물상견충류생물량적주요배경인자,설명상근지당적부유식물군락접근。감우소조사적지당내TN、TP、CODMn화TN/TP교저,건의괄당증가잡식성어류방양밀도화배합사료투위량병강저압분시비량。
In this study, we investigated the species composition and biomass of phytoplankton and abiotic environmental factors in ten commercial Hyriopsis cumingii ponds located in Zhuji City, Zhejiang Province, from August 29 to September 1, 2011. A total of 51 genus of phytoplankton were observed, and Merismopedia sp. , Microcystis sp. , Coelosphaerium sp. and Scenedesmus sp. were the dominant species during the investigation. The biomass of phytoplankton was 0. 71~8. 01 × 108 cell/L, and blue-green algae account for 71~97% of the phytoplankton biomass. Dissolved oxygen (4~12 mg/L) was relatively high, while Secchi depth (33 cm), total nitrogen (TN, 1. 933~4. 062 mg/L), total phosphorus (TP, 0. 154~1. 010 mg/L), chemical oxygen demand (6. 49~10. 06 mg/L) and TN/TP were low in the ponds. According to results of this investigation, it is recommended that the stocking density of omnivorous fishes and input of formulated fish feed should be increased, while the amount of duck manure input should be reduced, in these commercial ponds.